Should you be tempted, there are several reasons not to see the newly-debuted Joker (or movies like this one). I’m sure that if I were to watch it, I could offer a hundred more. (And while some choose to be the filter for others by watching movies like this one and warning them of the content therein, I would suggest that Spirit in us as Christians is the better “filter,” leading us not to watch this kind of thing to begin with. Cf. Galatians 5:16–26.)
Here are at least three reasons not to watch the Joker:
First, Hollywood has no design for your edification as a Christian. This is said for even “better” movies that seem to have fewer objectionable scenes and themes for your mind’s consideration. To intentionally put one’s mind for 120 minutes towards a movie that entertains and climaxes on one sinful moment after another seems to be anything but obedience to passages such as Romans 12:1–2 and Philippians 4:8.
Second, it offers as entertainment the very violence it says that the film is supposed to condemn. One is supposed to abhor the violence that makes a man into being the villainous Joker. But then the movie is said to revel in his revenge through violence upon those trod him down. I read in the news that the lead actor left an interview because he was asked if the movie actually promoted the very violence that it says to condemn. He apparently didn’t know how to answer the question. Besides this actor’s naively playing such a role and apparently (at least initially) not being able to care less as to what impact his production has upon you as the viewer, the very fact that the question was asked betrays that the answer is, incidentally at best and intentionally at worst, yes. In the end, yes, you as the viewer will be tempted or told to glory in the Joker as he robs the Lord of vengeance and sinfully retaliates against his aggressors.
Third, there are better ways of redeeming the time before the coming of our Lord (cf. Ephesians 5:15–16). Do something intentionally Christian. Or enjoy the natural things of this world with a view to glorifying God in His creation. Read a good book. Spend some time with your family. Or at the least, for the few that are out there, maybe just choose a movie that has some wholesome qualities.
What I’ve said of the Joker above could be said for thousands of movies besides. Please know I write these things as one Christian to another and as a pastor who simply desires that we glory in what is truly worth our affection. Whether we eat or drink or watch a movie, we should do all to the glory of God, but only in a manner that is truly glorifying to Him.